UML. Quiz with Explainations. Hans-Petter Halvorsen, M.Sc.

Transcription

1 UML Quiz with Explainations Hans-Petter Halvorsen, M.Sc.

2 Questions 1. What is UML? 2. What is an ER diagram? 3. Give example of some types of UML diagrams (in total we have 14 different types) 4. Give examples of software used to create UML diagrams 5. List the 2 different categories of UML diagrams we have 6. Create a Class Diagram for a typical School including Classes Teacher, Student, Course, Grade, etc.

3 What is UML?

4 Unified Modeling Language (UML) A modeling language used in software engineering Very popular within OOA, OOD, OOP Developed in the 1990s UML was adapted as an ISO standard in 2000 UML 2.2 has 14 different types of diagrams OOA = Object Oriented Analysis, OOD = Obeject Oriented Design, OOP = Object Oriented Programming 4

5 Use Case Use Case Example for a Restaurant: Diagram A use case is a list of steps, typically defining interactions between a role (known in UML as an "actor") and a system, to achieve a goal. The actor can be a human or an external system. Actor [ Use Case 5

6 Sequence Diagram

7 Class Diagram 7

8 Why use UML? Design Forward Design: doing UML before coding. Makes it easier to create the code in a strucured manner Backward Design: doing UML after coding as documentation When doing changes in the Design, make sure to update the Code according to the new Design Code Some Tools can Autogenerate Code from UML diagrams When doing changes in the Code, make sure to update the UML Diagrams 8

9 What is an ER diagram?

10 Database Design ER Diagram ER Diagram (Entity-Relationship Diagram) Used for Design and Modeling of Databases. Specify Tables and relationship between them (Primary Keys and Foreign Keys) Example: Table Name Table Name Primary Key Primary Key Foreign Key Column Names Relational Database. In a relational database all the tables have one or more relation with each other using Primary Keys (PK) and Foreign Keys (FK). Note! You can only have one PK in a table, but you may have several FK s.

11 Table Name ER Diagram Example - Visio Primary Key (PK) Foreign Key (FK)

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13 Give example of some types of UML diagrams (in total we have 14 different types)

14 UML Diagrams Klassediagram (Class Diagram) Komponentdiagram (Component Diagram) Produksjonssettingsdiagram (Deployment Diagram) Objektdiagram (Object Diagram) Pakkediagram (Package Diagram) Aktivitetsdiagram (Activity Diagram) Sekvensdiagram (Sequence Diagram) Samhandlingsdiagram (Communication Diagram), forenklet versjon av UML 1.x Collaboration Diagram Bruksmønserdiagram (Use Case Diagram) Tilstandsdiagram (State Machine Diagram) Sammensatt strukturdiagram (Composite Structure Diagram) (UML 2.0) Interaksjonsoversiktsdiagram (Interaction Overview Diagram) (UML 2.0) Tidsforløpsdiagram (Timing Diagram) (UML 2.0) 14

15 Give examples of software used to create UML diagrams

16 UML Software Visio Enterprise Architect StarUML Rational Rose Visual Studio (Ultimate) etc. (hundreds different alternatives) 16

17 UML in Visual Studio Ultimate Improving-architecture-through-modeling 17

18 List the 2 different categories of UML diagrams we have

19 UML Diagrams 2 categories: 1. Structure Diagrams 2. Behavior Diagrams Interaction Diagrams (A Subset of Behavior Diagrams) 19

20 UML Diagrams 20

21 Create a Class Diagram for a typical School including Classes Teacher, Student, Course, Grade, etc.

22 Here is a start: Note! You should write all the Classes, etc. in English!

23 References Software Development - A Practical Approach Halvorsen, Hans-Petter, 2015 Essentials of Software Engineering Frank Tsui; Orlando Karam; Barbara Bernal, 3 ed., Jones & Bartlett Learning Software Engineering I. Sommerville, 10 ed.: Pearson, 2015 Software Engineering. Modern Approaches E. J. Braude and M. E.Bernstein, 2 ed.: Wiley,

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25 Hans-Petter Halvorsen, M.Sc. University College of Southeast Norway Blog: